Work has started to remove the giant trampolines at Bounce Below to make way for a new “bigger and better” underground attraction.

Zip World opened Bounce Below in 2014 - with coverage around the globe for the adventure site in giant caverns at Llechwedd slate quarry, Blaenau Ffestiniog.

The company - behind the giant zip wires in Bethesda and Blaenau Ffestiniog - said Bounce Below had been a “massive success” but that they believed they could make it even better.

This has seen them start to rip out the current equipment in a challenging project in the slate caverns.

The new facility will re-open in May.

Johara Sykes-Davies, from Zip World, said: “After the massive success of Bounce Below since its opening in 2014, Zip World has decided they can make it bigger and better with new elements such as incredible solid slides built in Germany.

“Construction has started and the adventure attraction will re-open on May 14.

Jack Moriarty, construction manager at the site, said: “We are in the first phase of removing the nets from the old Bounce Below to make way for the installation of the new slides and nets for the new venture. “This will last a couple of months and the new facility will be opening in May.

“There is a lot to do so bring on the challenge.”

Zip World - led by owner Sean Taylor - has expanded rapidly across the region since launching the first giant zip wire at Penrhyn Quarry in Bethesda in 2013.